Japanese label, associated with the chain of live venues and owned by the Parco retail group.
Also credited as Quattro Label.

By system of catalog numbers on Japanese releases (Upon RIAJ's guidance RIS502, so called 'standardized commodity code') label code (manufacturer code) for Quattro is "QT" (first two letters in catalog number, "QTCY-1059" for example, third letter "C" means CD release).